Matrix™ Amplified Classroom Speaker System

PN: IMA-120
Amplifier | Infrared Microphone Receiver | Audio Mixer | Wall Panel Controller






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Matrix™ Amplified Classroom Speaker System Description

The Matrix™ is ideal for plenum applications of the Sound Field amplifier/receiver. With a simple CAT-5 cable, the TeachLogic CPS-120 (or CPR-125) wall mount controller manages audio sources connected to the amplifier.

The controller has an intuitive touch interface with the additional benefit of Bluetooth pairing of an extra audio device (such as a smartphone). And with two infrared wireless microphone channels, the Matrix™ is sure to be the low profile, high feature Sound Field solution you’ve been looking for.

Matrix™ Amplified Classroom Speaker System Details


  • 2 infrared wireless microphone receivers with volume control
  • 2 stereo, line level, or aux inputs (3.5 mm)
  • 1 dual mono line level output for Assistive Listening System with gain control (3.5 mm)
  • 2 Power Amplifiers: Total 50 W RMS (Class D amplifier, 25 W ea channel)
  • Security Alert, contact closure, N/O, N/C
  • Page override (muting) with Page Pass-through to classroom speakers | Input level 100 V, 70 V, 25 V
  • RS-232 wall panel control, RJ-45
  • RS-232 on/off switch
  • Teacher Priority instantly attenuates all line inputs
  • Bass/Treble control equalizer ±12 dB
  • 2 external microphone sensor inputs, single RCA


Weight 1.3125 lbs
Dimensions 1.5 × 7.5 × 4.25 in
Receiver Input

Infrared FM


FM Wide-band

Reception Frequencies

Ch. A: 2.08 MHz
Ch. B: 2.54 MHz

Infrared Wavelength

850 nm

Tone Signal

Ch. A: 32.768 kHz


50 μs

Frequency Response

40 hz – 18 kHz, ±3 dB

S/N Ratio

>65 dB

Total Harmonic Distortion

<1 % @ 1 kHz

Nominal Deviation

±10 kHz

Maximum Deviation

±25 kHz

External Sensor Input

2, RCA

Connectivity Coverage

1,600 sq ft

Line Inputs

2 : 3.5 mm line level aux with +10 dB gain control

Line Output

3.5 mm line level output with gain control

Page Over-Ride

2-pin Phoenix; 3 settings: 100 V, 70 V, 25 V


Level control

Security Alert

Contact closure (COM, N/O, N/C)


Bass/Treble control, ±12 dB

Output Power

2 digital amplifiers @ 25 W, 50 W total (RMS)

Output Impedance

4 Ω min/channel4-pin Phoenix connector

Power Supply

19 VDC, 3.4 A; CE, CSA and UL Listed

Matrix™ Amplified Classroom Speaker System Components

Classroom Component Layout

  • Sapphire (IRT-60) wireless pendant transmitter, a high-quality cardiod microphone with lanyard.
  • ICS-55 Ceiling Sensor gives 360-degree infrared coverage for optimal audio performance.
  • Matrix™ Sound Field amplifier/receiver to support classroom audio sources.
  • SP-628 Ceiling Speakers (four shown) provide excellent quality voice reproduction.
  • SP-2000 Wall Mount Speakers (optional), allow for installation when ceiling is not accessible.
  • CPS-120 Wall Mount Control Panel with Bluetooth.

Matrix™ Amplified Classroom Speaker System Downloads